I use the GPS, compass and topo maps all together. I create maps of my area using maptech terrain navigator or topo usa, print them with UTM coordinates, pick likely spots and use the GPS to navigate to them. I use the compass to follow the bearing given by the GPS so I don't have to leave it turned on all the time. I've found the GPS very handy for marking downed game or my truck and returning in the dark. I've used a GPS for 5 years and never had a failure despite leaving it on my bumper twice and sending it tumbling. Extra batteries are lightweight. The maps are handy because the straight line path given by the GPS is usually impossible to follow in the woods. If you hunt the same area all the time, the need for electronics is reduced, but for new areas its a great asset.